Microcom 428M, Operator'S Manual

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Chapter 3 Getting Started
428M Operator’s Manual - 880028-0112 3-19
3.8 Sensor Inputs
Figure 3-19 LPD “Label Present Detector Location
Sensor Ports
1) LPD (Label Present Detector). Used to detect when media is present and is
used in conjunction with the TOF (Top-Of-Form) operation. A potentiometer is
provided to adjust the distance over which the LPD sensor will detect reflections.
The maximum range may be adjusted over a distance of 0.20”

0.85”.
Distances are measured from the surface of the sensor to the reflecting surface.
This pot may be used to decrease sensor range to avoid false reflections from
stationary objects such as a cutter.
2) PAPER LOW configuration. This general purpose input is a reflective sensor
typically used with custom applications to sense when stock is running low at the
stock source. This enables the operator to replenish stock before a >LOW
STOCK< condition occurs and since it is typically more distant from the Print
Head than the PSO “Pre-Stock Out Sensor,” would be less critical . The active
state of the signal is programmable thru Soft switch #3, bit #4 (^D23 command).
An active state will return an >INPUT 2< response when queried. The maximum
pick-up range not adjustable and is set to sense a reflection up to 0.80” from the
sensor’s surface.
LPD
“Label Present
Detector”